Azetidine-2-carboxylic acid: A naturally occurring inhibitor ofSpodoptera littoralis (boisd.) (Lepidoptera: Noctuidae) |
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| Authors: | Esther Hassid S W Applebaum Yehudith Birk |
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| Institution: | 1. Departments of Entomology, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
2. Departments of Agricultural Biochemistry, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
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| Abstract: | Ruscus hypoglossum andUrginea maritima (Liliaceae) are highly resistant toSpodoptera littoralis. The foliage of these plants contains a proline analog, L-azetidine-2-carboxylic acid (AZA): inUrginea at a concentration of 1.7% of fresh weight and inRuscus at a concentration of 0.019%. The concentration of AZA inUrginea accounts for its lethal effects onS. littoralis larvae and for the direct effect of an acetone-soluble 80% methanol extract on adultS. littoralis, as evidenced by reduced viability of eggs deposited. The toxicity ofRuscus extracts is only partly attributable to AZA content. |
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